Basics of the Chemistry of Life

What is the smallest functional unit of matter?

• Element
• Atom
• Proton
• Electron

These are pure substances that cannot be broken down further into other chemical substances. 

• Elements
• Atoms
• Protons
• Electrons

These carry a positive charge.

• Protons
• Electrons
• Neutrons
• Quarks

These carry a negative charge.

• Proton
• Electrons
• Neutron 
• Higgs Boson Particle

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Which of these are not elements?

• Carbon
• Oxygen
• Water
• Hydrogen

Covalent Bond.

• A bond where electrons are donated and received 
• A bond where atoms of opposite charges attract
• A bond where electrons are shared between atoms

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Ionic Bond.

• A bond where electrons are donated and received 
• A bond where atoms of opposite charges attract
• A bond where electrons are shared between atoms

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Atoms will react in ways that allow them to obtain 8 electrons in their highest shell.

• Octet Rule
• Electron Shell Completion Rule
• 2(n²)

Atoms in a molecule are usually most stable when they have ___ electrons in their outer shell (valence electrons).

• 1

• 2

• 4

• 8

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If an atom receives an electron, what is the charge of that atom?

• 1+
• 1-
• 2+
• 2-